Transmission-gear casing.



D. D. STERNBERGH. TRANSMISSXON GEAR CASING.

APPLICATION FILED IAN-13, l915.

Patented June 22, 1915.

m gma unrrso erases r rsisr DAVID D. STEBNBEBGH, OF READING, PENNSYLVANIA, ASSIGNOB T0 AMERICAN DIE AND TOOL COMPANY, OF READING, ZEENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

" TRANSMISSION-GEAR enema.

Specification of Letters Patent.

latented June 22, t 2; l5.

Application filed January 13,1915. Serial Flo. 1,903.

T all 107mm it may 6011 new Be it known that l, Dun) D. S'rnnxunusrr, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Transmission- Gear Casings, of which the following is a specification.

This invention relates particularly to transmission-gear mechanism for automobiles, and consists essentially in an improved construction comprising a twopart transmission-gear casing in which a shaftbearing end well is sepamtel formed on each of the subsequently united parts or sections, so as to provide for especially convenient and accurate finishing and assembling, and neat appearance of the completed mechanism.

The invention is fully described in cou nection with the accompanying drawing, and the novel features are sprcilicallr p intecl out in the claims.

' Figure l is a. longitudinal srctiouul \icu indicating the essential parts ol' :1 complete transmission gear emb dying llli: in'rl-ulion. Figs. 2 and 3 are cud iiows oi the scparalwl casing sections, looking in the direction of the arrows 2 and 3 respectively, of V The drawing indicates an ordiuzus automobile engine casing 53, inclosing lhc ll Wheel 6 on the engine shaft- 7; together with the usual clutch-engaged shaft extension 8; only the operating lever 9 oi the c mechanism being shown. This shaft 8 with its clutch mechanism. and in main trunsinission shal ll) with the char gear mechanism used in connection ills, with, are mounted on and incioscd h the improved t-Wopurt casing hou'n. which constitutes the cssc rial tcaturc oi any i1ivention as full de This improved nsmv 'on-gcar casing comprises two separately formed. holow sections, marked 15 and lb respeetirely, each of which is formed with a single end wall, 17 and 18 respectively; these walls are formed with openings which form hearings for the opposite ends of the inclosed shafts when the two sections are brought together in unitary structure. lilac" section separately finished, in such nuinner es to accurately aline the cooperating beerin in the spacedepart. end Wells, when the two sections are united, thereby securing coir venience and accuracy both in nulei'iiuin and assembling the parts of the structure.

The open end of the casing section if formed with a bolting rim 1!) which adapted to the particular motor casing 5 l: which it is to be applied. The Wall 1? at it reduced opposite end, which is proilrlcr With'a suitable central hearing '20 for the outer end of the motor shaft extension 8. has formed on its outer face an eccentri boss 21, upon which the separate casing section 16 iaccurately fitted in uniting the sec tionshy means of the bolting rim 22. The

main transmission or drive shaft 10 is mounted in a bearing l2 therefor formed in the end Wall m.- casing 16 and its reduced opposite end ll supported in the recessed and oi shalt as shown. The (llll walls l7 olilscclion l5. and 18 of: sec-- lion 'l are lUTlllLll as shown with C ll'lxr spending hearings no and 30 respectircly l'or the change ur couuicrshui't 31, and :39. 3:2 respectively for the operating-lei "ills 23 \\'hu;li properly space agmrt ugs are hrougi" uliucui -izi I iuil' iill Sl(ll(1il-$. scuihiiugg' lhc fiil' itiil c' lhcs shells. with lhcir ulmchml pails lixcil t l rcto, arc couvcuicutiyplucczl in the section ll), and lhcu properly engaged in the hearings rl' rlion 1-) in uniting the two s n-lions. 'luc transmission gear casing lhus iorincd is one that may lureadily cast and llillk'lil) :uul zu-curulcl machined and usscullilcil, lhc ccrculjric lmss ll 'isling in such Jit-Sk]lll)l) and lhc united secti ns prcsculiug u neat and pleasing appearance. a

llhul- I claim is:

l. {i uuiliiry transmission-gcn cur comprising two separately loruuwl a1 inutcly c i'liiulric al sections, each prmutcd u'irh. a shalchcuriug \Yzlll at one end lhcrc in as;-

ol' willy, and with u bolting riin at the other cull; each 01 said end walls bring}; \ri' -i series of iiulcpeudcntly fore. hcauug inicrturcsadapted to alii lively with those of the other cud the sections united.

ihinul'iou wi lln cos:

at the other curt;

.j, and W' euch of s Ill being provided with a series of independently formed shaft-bearing apertures adapt ed to aline respectively with those of the other end Well when the sections are united;

a, dutch-engaged motor-shaft extension in closed by one of said casing sections and mountedin the end wall thereof; a main transmission shaft inciosed by the other casing section and mounted at its opposite ends in the end wall of said section and in said motor-shaft extension respectively; a

countershaft, and change-gear-1ever shaft; mounted at their opposite ends in the end Walls of the respective casing sections; and

gears connecting said main shaft and coun 15' 

